<!DOCTYPE html>
<meta charset="utf-8">
<title>Input type=image with CSS content.</title>
<link rel="author" href="mailto:masonf@chromium.org">
<link rel="match"  href="input-image-content-ref.html">

You should see a red dot.<br>
<style>
  input {
    content: url();
  }
</style>

<input type="image">
